"Superman:" that's the word Apple CEO Tim Cook used to welcome his senior VP Craig Federighi back to the stage for an incredible fourth time during what was ostensibly Cook's WWDC keynote.

Mashable has crunched the numbers, and Federighi was on stage for nearly 78 minutes during the 112-minute event, or roughly 70% of the time. By contrast, Cook was on stage for less than 20 minutes, or a mere 17.6% of the time.

Granted, it made sense for a software guy like Federighi to hog the stage this year, given that so much of the news focused on Apple's two operating systems, iOS and Mac OS X. But if you look back at WWDC 2013, when the headline product was the Mac Pro desktop, you can still see a similar pattern.

Federighi owned the Moscone stage in 2013 for 55 minutes, or very nearly 50% of the time. Cook was in the spotlight for just half of that time.

And of course, the numbers only tell half the story. Whereas Cook's delivery remains slow, stilted and serious, Federighi is a lively presence with a distinct sense of humor — even if that humor often tends to fall under the category of Dad jokes.

Federighi flashed a "metal" hand sign when introducing Apple's new gaming program system called Metal. He refused a call that was supposedly from his mom, and called "the newest Apple employee" instead — Dr. Dre. And in the most bizarre segment, demonstrating video messages in iMessage backstage, he wore a large wig and had another Apple employee take a chainsaw to it — a joke on Federighi's famous large, gray, Flock of Seagulls-style hair.

Will Federighi's lively delivery propel him to even greater chunks of Apple keynote real estate in future? One thing's for sure — he can't occupy the stage for much more of the time without pushing Cook off it completely.

Alex Magdaleno contributed to this report.

Apple WWDC 2014

People wait to get in to the Apple Worldwide Developers Conference at the Moscone West center on June 2, 2014 in San Francisco, California.

Image: Justin Sullivan/Getty Images

People wait to get in to the Apple Worldwide Developers Conference at the Moscone West center on June 2, 2014 in San Francisco, California.

Image: Justin Sullivan/Getty Images

Attendees wait in line to enter the Moscone Center during the Apple Inc. World Wide Developers Conference in San Francisco, California, U.S. on June 2, 2014.

Image: David Paul Morris/Bloomberg/Getty Images

Attendees wait in line to enter the Moscone Center during the Apple Inc. World Wide Developers Conference in San Francisco, California, U.S. on June 2, 2014.

Image: Mashable Lance Ulanoff

The crowd awaits the beginning of the Apple Worldwide Developers Conference event in San Francisco, June 2, 2014.

Image: Mashable, Lance Ulanoff

Apple CEO Tim Cook arrives to speak during the Apple Worldwide Developers Conference at the Moscone West center on June 2, 2014 in San Francisco, California. Tim Cook kicked off the annual WWDC which is typically a showcase for upcoming updates to Apple hardware and software. The conference runs through June 6.

Apple Senior Vice President of Software Engineering Craig Federighi (L) and Apple CEO Tim Cook speak during the Apple Worldwide Developers Conference at the Moscone West center on June 2, 2014 in San Francisco, California.

Image: Justin Sullivan/Getty Images

Apple Senior Vice President of Software Engineering Craig Federighi speaks during the Apple Worldwide Developers Conference at the Moscone West center on June 2, 2014 in San Francisco, California. Tim Cook kicked off the annual WWDC which is typically a showcase for upcoming updates to Apple hardware and software. The conference runs through June 6.

Apple Senior Vice President of Software Engineering Craig Federighi speaks during the Apple Worldwide Developers Conference at the Moscone West center on June 2, 2014 in San Francisco, California.

Image: Justin Sullivan/Getty Images

An apple representative speaks at the Apple Worldwide Developers Conference event in San Francisco, June 2, 2014.

Image: Mashable, Lance Ulanoff

Apple Senior Vice President of Software Engineering Craig Federighi speaks during the Apple Worldwide Developers Conference at the Moscone West center on June 2, 2014 in San Francisco, California.

Image: Justin Sullivan/Getty Images

Apple Senior Vice President of Software Engineering Craig Federighi speaks during the Apple Worldwide Developers Conference at the Moscone West center on June 2, 2014 in San Francisco, California.

Image: Justin Sullivan/Getty Images

Tim Cook, chief executive officer of Apple Inc., delivers a keynote address during the Apple World Wide Developers Conference (WWDC) in San Francisco, California, U.S. on Monday, June 2, 2014. Apple Inc. announced the new Mac operating system called "Yosemite".

Mashable
is a global, multi-platform media and entertainment company. Powered by its own proprietary technology, Mashable is the go-to source for tech, digital culture and entertainment content for its dedicated and influential audience around the globe.